US8820424B2 - Fire fighting nozzle - Google Patents

Fire fighting nozzle Download PDF

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Publication number
US8820424B2
US8820424B2 US12/498,707 US49870709A US8820424B2 US 8820424 B2 US8820424 B2 US 8820424B2 US 49870709 A US49870709 A US 49870709A US 8820424 B2 US8820424 B2 US 8820424B2
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US
United States
Prior art keywords
nozzle
projecting body
fire fighting
stem
outlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US12/498,707
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English (en)
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US20100032491A1 (en
Inventor
Todd Brian Lozier
Donald E. Sjolin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Elkhart Brass Manufacturing Co LLC
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Elkhart Brass Manufacturing Co LLC
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Priority to US12/498,707 priority Critical patent/US8820424B2/en
Assigned to ELKHART BRASS MANUFACTURING COMPANY, INC. reassignment ELKHART BRASS MANUFACTURING COMPANY, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LOZIER, TODD BRIAN, SJOLIN, DONALD E.
Publication of US20100032491A1 publication Critical patent/US20100032491A1/en
Application granted granted Critical
Publication of US8820424B2 publication Critical patent/US8820424B2/en
Assigned to BNP PARIBAS, AS ADMINISTRATIVE AGENT reassignment BNP PARIBAS, AS ADMINISTRATIVE AGENT GRANT OF SECURITY INTEREST Assignors: ELKHART BRASS MANUFACTURING COMPANY, INC.
Assigned to OCM FIE, LLC, AS ADMINISTRATIVE AGENT reassignment OCM FIE, LLC, AS ADMINISTRATIVE AGENT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ELKHART BRASS MANUFACTURING COMPANY, INC.
Assigned to ROM ACQUISITION CORPORATION, FIRE RESEARCH CORP., IEM, INC., SPECIALTY MANUFACTURING, INC., Randall Manufacturing LLC, ELKHART BRASS MANUFACTURING COMPANY, INC., REAR VIEW SAFETY INC. reassignment ROM ACQUISITION CORPORATION RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: BNP PARIBAS
Assigned to SPECIALTY MANUFACTURING, INC., IEM, INC., REAR VIEW SAFETY INC., Randall Manufacturing LLC, FIRE RESEARCH CORP., ROM ACQUISITION CORPORATION, ELKHART BRASS MANUFACTURING COMPANY, INC. reassignment SPECIALTY MANUFACTURING, INC. RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: OCM FIE, LLC
Assigned to UBS AG, STAMFORD BRANCH, AS COLLATERAL AGENT reassignment UBS AG, STAMFORD BRANCH, AS COLLATERAL AGENT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ELKHART BRASS MANUFACTURING COMPANY, INC.
Assigned to GOLDMAN SACHS BANK USA, AS COLLATERAL AGENT reassignment GOLDMAN SACHS BANK USA, AS COLLATERAL AGENT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ELKHART BRASS MANUFACTURING COMPANY, INC.
Assigned to ELKHART BRASS MANUFACTURING COMPANY, INC. reassignment ELKHART BRASS MANUFACTURING COMPANY, INC. RELEASE OF FIRST LIEN SECURITY INTEREST IN PATENTS (RELEASES RF 044951/0793) Assignors: GOLDMAN SACHS BANK USA, AS COLLATERAL AGENT
Assigned to ELKHART BRASS MANUFACTURING COMPANY, INC. reassignment ELKHART BRASS MANUFACTURING COMPANY, INC. RELEASE OF SECOND LIEN SECURITY INTEREST IN PATENTS (RELEASES RF 044951/0888) Assignors: UBS AG, STAMFORD BRANCH, AS COLLATERAL AGENT
Expired - Fee Related legal-status Critical Current
Adjusted expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/02—Nozzles specially adapted for fire-extinguishing
    • A62C31/03—Nozzles specially adapted for fire-extinguishing adjustable, e.g. from spray to jet or vice versa

Definitions

  • the present invention relates to a nozzle and, more particularly, to a fire fighting nozzle.
  • Typical combination fire fighting nozzles use a stem that has a small diameter shaft attached to a larger diameter stem head.
  • the stem head is positioned internal to the tubular tip of the nozzle such that the difference between the outside (OD) of the stem head and the inside diameter (ID) of the tip create an orifice which appropriately meters the water flow for the desired flow/pressure operational characteristics.
  • the present invention provides a nozzle assembly that fills this void area thereby lessening the affect of the vacuum.
  • the nozzle assembly may also provide a flow surface where the natural surface tension of water can be harnessed to converge the water stream in a less aggressive manner than heretofore known. Together, these two effects can create a less disrupted stream, a better stream reach, and an improved water delivery footprint at the target.
  • a nozzle assembly in one form of the invention, includes a nozzle body with an inlet, an outlet, and a passageway extending from the inlet to the outlet.
  • the nozzle assembly further includes a stem located in the passageway about which fluid flows when fluid is flowing through the passageway.
  • an extended body is provided that projects outwardly from the nozzle body and outwardly from the nozzle body outlet, which at least partially fills the void beyond the nozzle outlet where water exits the nozzle assembly.
  • the extended body has a concave or convex outer flow surface.
  • the extended body comprises a hollowed extended body.
  • the hollowed extended body is formed from a pliable material wherein the shape of the outer surface of the extended body may be adjusted and further adjusted in a manner to provide an abutment against which the water exiting the nozzle body outlet impinges.
  • a movable member is provided in the flexible hollowed body of the extended body, which may be used to adjust the cross-section of the flexible hollowed body.
  • the movable member may comprise a rod that couples to an actuator on one end and coupled to the flexible hollowed body on the other end. The actuator is then used to move the rod to compress or extend the flexible hollowed body to thereby change the cross-section of the flexible hollowed body.
  • the nozzle stem is movably mounted in the passageway to thereby vary the opening size at the outlet of the nozzle body.
  • the nozzle may comprise a combination nozzle or a smooth bore or solid stream nozzle.
  • the nozzle may comprise a handline nozzle, a master stream nozzle, a fixed orifice nozzle, or an automatic nozzle.
  • the surface of the extended body may be smooth and further have a varying cross-section along the length of the extended body to thereby form a concave straight or convex or combination of geometric surfaces.
  • FIG. 1 is a perspective view of a nozzle assembly incorporating the nozzle stem extension of the present invention
  • FIG. 2 is a similar perspective view of the nozzle assembly of FIG. 1 with the nozzle extension removed;
  • FIG. 3 is a cross-section view of the nozzle assembly of FIG. 1 ;
  • FIG. 4 is a side elevation view of the nozzle assembly with the extension removed;
  • FIG. 4A is an exploded perspective view of the nozzle assembly of FIG. 4 ;
  • FIG. 5 is an input end elevation view of the nozzle assembly of FIG. 3 ;
  • FIG. 6 is a perspective view of the nozzle assembly incorporating another embodiment of the nozzle stem extension
  • FIG. 7 is a cross-section view of the nozzle assembly of FIG. 6 ;
  • FIG. 8 is an inlet end elevation view of the nozzle assembly of FIG. 7 ;
  • FIG. 9 is a cross-section view of another embodiment of the nozzle stem extension of the present invention.
  • FIG. 10 is a similar view to FIG. 9 illustrating the change in cross-section of nozzle stem extension of the present invention.
  • the numeral 10 generally designates a nozzle assembly of the present invention.
  • nozzle assembly 10 incorporates a nozzle extension 32 to reduce the void area beyond the nozzle outlet where water exits to thereby reduce the vacuum that is generated at the nozzle outlet of conventional nozzles.
  • the nozzle assembly may also provide a flow surface where the natural surface tension of the water may be harnessed to converge the water stream in a less aggressive manner than heretofore known.
  • the present invention is described in reference to an adjustable nozzle assembly, it should be understood that the present may be incorporated into a combination nozzle, as well as a smooth bore or solid stream nozzle, including an adjustable solid bore nozzle.
  • the nozzle assembly may comprise a handline nozzle, a master stream nozzle, a variable orifice nozzle, an automatic nozzle, or the like and where applicable may be actuated using a variety of different actuation methods, including manual, electric, hydraulic, or radio frequency controlled or the like.
  • nozzle assembly 10 includes a nozzle body 12 , an inlet assembly 14 , which forms an inlet 16 , and a nozzle tip 18 , which forms an outlet 20 .
  • Inlet assembly 14 includes an annular member 14 a that forms an adapter, which mounts to nozzle body 12 , and another annular member 14 b that is mounted about annular member 14 a by a low friction connection 14 c , such as a plurality of ball bearings or TEFLON strip or the like, and forms a swivel connection for connecting a hose to the nozzle assembly, as would be understood by those skilled in the art.
  • a gasket 14 d such as a rubber gasket, is provided between annular member 14 a and annular member 14 b.
  • Nozzle tip 18 includes an annular member 18 a , which mounts to the opposed end of nozzle body 12 , and a bumper 18 b , which is mounted to annular member 18 a .
  • Annular member 18 a supports a pair of handles 18 c and a drive screw 18 d , which extends into a groove 12 a formed on cylindrical body 12 b of nozzle body 12 so that nozzle tip may be rotated about nozzle body 12 when a force is applied to handles 18 c .
  • the nozzle tip may also be rotated by other methods, including for example, an actuator, such as an electric actuator or hydraulic actuator.
  • a passageway 22 Extending through inlet assembly 14 and nozzle body 12 is a passageway 22 , which extends from inlet 16 to outlet 20 and further sealed by a plurality of o-ring seals S.
  • a nozzle stem 24 Positioned in passageway 22 is a nozzle stem 24 , which includes a base 26 that mounts nozzle stem 24 to nozzle body 12 in passageway 22 .
  • base 26 includes an inner annular member 26 a and an outer annular member 26 b , which are interconnected by a plurality of radially extending ribs or arms 26 c , which define there between a plurality of passageways 26 d through which the water flows when inlet assembly 14 is mounted to and in fluid communication with a supply of fluid.
  • nozzle stem 24 has a cup-shaped base with a cone or bell shaped body 28 that extends from the cup-shaped base; however, it should be understood that the shape of the stem may vary depending on the application.
  • nozzle assembly 10 comprises an automatic nozzle and is configured so that when there is a pressure drop in the incoming fluid at inlet 16 , the position of the nozzle stem will automatically be adjusted to increase the pressure at outlet 20 , though the volume of fluid will be decreased.
  • nozzle assembly 10 includes a piston assembly 30 , which mounts stem 24 to inner annular member 26 a of base 26 .
  • Piston assembly 30 includes a piston 30 a mounted to a rod 30 b , which extends through valve stem 24 and secures valve stem 24 to base 26 .
  • rod 30 b extends through a tubular member 30 c about which a compression spring 30 d , such as a stainless steel compression spring, is mounted and further is captured between piston 30 a (spacer spring 30 e may be provided between spring and piston 30 a ) and cup-shaped end of stem 24 .
  • compression spring 30 d will urge stem 24 toward the direction of the inlet to thereby reduce the spacing between the cup-shaped body of stem 24 and the angled surface of the nozzle body to increase the pressure at the outlet.
  • nozzle extension 32 is mounted to piston 30 a; however, nozzle extension 32 may also be mounted to the stem. Nozzle extension 32 is mounted such that it extends and projects outwardly from nozzle assembly 10 and from outlet 20 .
  • nozzle extension 32 comprises a solid body, such as solid metal or plastic body, with a tapered outer surface 32 a that tapers from at or near the base 32 b of the elongate body to at or near its distal end 32 c to provide a flow surface for the fluid flowing form outlet 20 of nozzle assembly 10 .
  • extension 32 at least partially and optionally substantially fills the void downstream of the piston and the stem.
  • nozzle extension 32 comprises an elongate solid body with a concave tapered surface 32 a .
  • nozzle extension 32 at least partially fills the void area just beyond the nozzle outlet where water exits nozzle assembly 10 . By at least partially filling in this void area, the affect of the vacuum is lessened.
  • nozzle extension 32 may provide a flow surface where the natural surface tension of the water can be harnessed to converge the water stream in a less aggressive manner than heretofore known. Together, these to effects create a less destructive stream, better stream reach, and improved water deliver footprint of the target. It should be understood that the width, length, and shape of the extension may vary depending on the size of the nozzle.
  • the flow surface may be concave, convex, or a combination of both.
  • the nozzle extension may be hollowed and, further, may be formed from a pliable material.
  • the numeral 132 generally designates another embodiment of the nozzle extension of the present invention.
  • Nozzle extension 132 mounts to piston 30 of nozzle assembly 10 in a similar manner to the previous embodiment but instead includes a concave flow surface 132 a , which extends with a varying cross-section that tapers from the base 132 b to the distal end 132 c.
  • the numeral 232 designates another embodiment of the nozzle extension of the present invention.
  • Nozzle extension 232 similarly mounts to, for example, the piston 30 or stem 24 of nozzle assembly 10 in a similar manner to the previous embodiment and is formed from a hollowed body 234 and optionally from a pliable material so that the cross-section of extension 232 may be varied.
  • nozzle assembly 10 is for illustrative purposes and that extension 232 , similar to the other extensions, may be mounted on different types of nozzles, examples of which are noted above.
  • the cross-section of the nozzle extension 232 is hollowed to form a cavity 236 and further varied by a movable member 240 , which selectively compresses the nozzle extension body at the hollowed portion of the body, which results in the outer surface of the nozzle extension body bulging to form an abutment 232 a ( FIG. 10 ).
  • the degree of bulge or size of the abutment is a function of the size of the cavity and the pliability of the material forming the nozzle extension.
  • the movable member may comprise a rod with one end anchored to the tip end of the nozzle extension body and the other end extended into a passageway formed on the other side of the cavity and coupled to an actuator, such as a mechanical, electrical, electromechanical or hydraulic actuator or the like.
  • an actuator such as a mechanical, electrical, electromechanical or hydraulic actuator or the like.
  • the nozzle extension may be configured to form a local area of enlarged diameter, which as noted may be used to create an abutment against which the fluid flowing from outlet 20 impinges to produce a fog pattern or protective bubble, for example.
  • the nozzle extension may allow for the creation of a protective fog pattern.
  • this method allows for the creation of a protective fog pattern using all the water available as opposed to “stripping” away a portion of the water stream with fingers or other devices that intrude into the water stream (i.e. when all the water is diverted to the protective fog pattern, it is a more effect protective feature).
  • the extension allows the creation of a protective fog pattern in “non-combination nozzles”.
  • the body may have a smooth outer surface or may a textured outer surface to further enhance the effect of filling the void beyond the outlet.
  • at least a portion or the whole outer surface may have dimples or grooves, such as longitudinal grooves that extend along the length of the extension or lateral or circumferential grooves.
  • the outer surface may have regions of texture.
  • the flow over the body may be further dispersed or focused.
  • the textured surface may form pockets of air, which form a cushion to minimize or prevent the non-liquid material clumping on or sticking to the extension.
  • the texture may be regular or irregular, or a combination of both.
  • the surface texture may change. For example, if longitudinal grooves are provided on the outer surface and the body is expanded, so too would the width of the groove. Similarly dimples may expand when the body is expanded. By expanding the size of the groove or dimple, the effects of the texture may be changed to enhance the dispersion or the focus of the fluid flow.
  • nozzle assembly 10 with the exception of the bumper, the handle grips, and o-ring seals and where otherwise noted, are generally formed from metal and typically brass or aluminum.
  • the present invention provides a nozzle assembly that can harness the natural surface tension of the water to converge the water stream in a less aggressive manner than heretofore known.
  • the nozzle may comprise one of several nozzle assemblies including, for example a combination nozzle, a smooth bore or solid stream nozzle, for example.
  • the nozzle extension has been shown and described, it should be understood that the shape may be varied as needed to achieve the desired affect.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Nozzles (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
US12/498,707 2008-07-08 2009-07-07 Fire fighting nozzle Expired - Fee Related US8820424B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/498,707 US8820424B2 (en) 2008-07-08 2009-07-07 Fire fighting nozzle

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US7906808P 2008-07-08 2008-07-08
US7993108P 2008-07-11 2008-07-11
US12/498,707 US8820424B2 (en) 2008-07-08 2009-07-07 Fire fighting nozzle

Publications (2)

Publication Number Publication Date
US20100032491A1 US20100032491A1 (en) 2010-02-11
US8820424B2 true US8820424B2 (en) 2014-09-02

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Application Number Title Priority Date Filing Date
US12/498,707 Expired - Fee Related US8820424B2 (en) 2008-07-08 2009-07-07 Fire fighting nozzle

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Country Link
US (1) US8820424B2 (fr)
EP (1) EP2313163A4 (fr)
WO (1) WO2010005950A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104436489A (zh) * 2014-12-31 2015-03-25 西安新竹防灾救生设备有限公司 一种升降式灭火喷头

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120117915A (ko) * 2010-02-05 2012-10-24 가부시키가이샤 한도오따이 에네루기 켄큐쇼 반도체 장치
US9623271B2 (en) 2011-05-10 2017-04-18 Rom Acquisition Corporation Fire hose deployment device
EA022550B1 (ru) * 2011-10-28 2016-01-29 Государственное Учреждение Образования "Командно-Инженерный Институт" Министерства По Чрезвычайным Ситуациям Республики Беларусь Ствол пожарный ручной комбинированный

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2568429A (en) * 1945-10-19 1951-09-18 Fog Nozzle Company Distributor head
US3779318A (en) * 1972-10-05 1973-12-18 Factory Mutual Res Corp Discharge head for discharging fluid in two discharge patterns and fire protection system incorporating said head
US3863844A (en) 1973-05-02 1975-02-04 Fire Task Force Innovations In Automatic fire nozzle with automatic control of pressure and internal turbulence combined with manual control of variable flow and shape of stream produced
US3904125A (en) 1974-03-14 1975-09-09 Premier Ind Corp Constant pressure nozzle discharge mechanism
US5312048A (en) 1993-03-25 1994-05-17 Task Force Tips, Inc. Regulating nozzle with adjustable effective area baffle
WO1995019504A1 (fr) 1994-01-13 1995-07-20 Orion Safety Industries Pty. Limited Dispositif regulateur d'ecoulement de fluide
US7048207B2 (en) * 1998-04-06 2006-05-23 Williams Fire & Hazard Control, Inc. Fire fighting nozzle and method including pressure regulation, chemical and eduction features

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2568429A (en) * 1945-10-19 1951-09-18 Fog Nozzle Company Distributor head
US3779318A (en) * 1972-10-05 1973-12-18 Factory Mutual Res Corp Discharge head for discharging fluid in two discharge patterns and fire protection system incorporating said head
US3863844A (en) 1973-05-02 1975-02-04 Fire Task Force Innovations In Automatic fire nozzle with automatic control of pressure and internal turbulence combined with manual control of variable flow and shape of stream produced
US3904125A (en) 1974-03-14 1975-09-09 Premier Ind Corp Constant pressure nozzle discharge mechanism
US5312048A (en) 1993-03-25 1994-05-17 Task Force Tips, Inc. Regulating nozzle with adjustable effective area baffle
WO1995019504A1 (fr) 1994-01-13 1995-07-20 Orion Safety Industries Pty. Limited Dispositif regulateur d'ecoulement de fluide
US7048207B2 (en) * 1998-04-06 2006-05-23 Williams Fire & Hazard Control, Inc. Fire fighting nozzle and method including pressure regulation, chemical and eduction features

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PCT Search Report mailed Mar. 2, 2010 for the corresponding PCT Application No. PCT/US2009/049782.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104436489A (zh) * 2014-12-31 2015-03-25 西安新竹防灾救生设备有限公司 一种升降式灭火喷头
CN104436489B (zh) * 2014-12-31 2018-09-14 西安新竹防灾救生设备有限公司 一种升降式灭火喷头

Also Published As

Publication number Publication date
WO2010005950A8 (fr) 2010-05-27
EP2313163A2 (fr) 2011-04-27
WO2010005950A2 (fr) 2010-01-14
US20100032491A1 (en) 2010-02-11
WO2010005950A3 (fr) 2010-04-22
EP2313163A4 (fr) 2016-01-27

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